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Click on above photo for a larger image.
On this bench, workers are taught how to make proper welds and they are
tested on their abilities to make solid welds. Some pipes just carry
water under low pressure which requires one type of weld. Other pipes
carry air conditioning and other fluids or gasses under high pressure
which require a stronger weld. After students have done their welding on
test pipes, the pipes are tested under various pressure conditions for
The photos in this slide show were taken in the mid-1990's
by Steve Grande on his Amtrak travels throughout the nation.
The size of the photos is purposely smaller as disk space
was expensive and download speeds were slower at that time.
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